Originally Posted by Wutan

Honestly i have hoped for some better Rewards. It seems like it's nothing more than an Advanced Campagne...

I have hoped that you will get a 5* Ticket or something similar in the end...

I mean you have to train 3* and maybe even 2* for this...

Nation battle is just story mission that can only done by specific characters, there is still random arrow and spiderweb everywhere.
There is not much benefit from clearing them now, unless you are perfectionist.

Nation battle missions will drop material for second evolution when its implemented, but it still far in the future.